Magnus Thorlacius, Umeå University in Sweden (image) Umea University Share Print E-Mail Caption Magnus Thorlacius, Department of Ecology and Environmental Science at Umeå University shows what makes the round goby spreads in the Baltic Sea. Credit Magnus Thorlacius Usage Restrictions This photo may only be used in the context of this press release. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.